Nico Rehwaldt ff0d88bb90 chore(Viewer+Modeler): inherit from Diagram
* simplifies event handling
* relies on Diagram#clear to reset the diagram before
  successive imports
* allows diagram services to be re-used across imports
* allows diagram services to be injected (or retrieved)
  before import

Closes #237
2016-03-17 17:44:32 +01:00
..
2016-03-11 20:10:10 +01:00